About

The basic try .. rescue concept can be extended to support else and after clauses:

• The else block:
  • Where a pattern match on the successful result from the try-block occurs.
• The after block:
  • Where functions are invoked whether the try-block succeeds or is rescued as long as the program is running.
  • The result of the after block is not returned to the calling scope.

try do
  :a
rescue
  _ -> :error
else
  :a -> :success
after
  :some_action
end

# => :success

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Originally from Exercism elixir concepts